Michal Čihař -
2.8.1 release in demos and snapshots

As we recently started MAINT_2_8_1 branch, which will be used for 2.8.1
release, demo server and snapshots now also contains it.

Additionally CVS is switched back to anonymous service, but SourceForge
promises there will be no more than 2 hours delay. This also means that
CVS snapshots are again usable as CVS sources after unpacking.